:root {
  --color-navy: #0A192F;
  --color-navy-light: #112240;
  --color-orange: #FF6B00;
  --color-orange-soft: #FFA500;
  --color-teal: #64FFDA;
  --color-bg: #F5F7FA;
  --color-bg-blue: #E6F0FA;
  --color-text: #1B2631;
  --color-text-soft: #5A6A7F;
  --color-muted: #8892B0;
  --color-white: #FFFFFF;
  --font-headings: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Roboto Mono", monospace;
  --container: 1240px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --radius: 4px;
  --header-w: 260px;
  --header-h: 64px;
  --tabbar-h: 56px;
  --shadow-card: 0 2px 16px rgba(10, 25, 47, .06);
  --transition: .2s ease;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg {
  display: block;
  max-width: 100%;
}
button {
  font-family: inherit;
}
h1, h2, h3, h4 {
  font-family: var(--font-headings);
  color: var(--color-navy);
}
h1 {
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
}
h2 {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.2;
}
h3 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
}
h4 {
  font-size: 18px;
  font-weight: 700;
}
p {
  margin-bottom: 1em;
}
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 2px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 200;
  background: var(--color-navy);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 4px 4px;
  font-weight: 700;
  text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus {
  top: 0;
}
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 120;
  background: linear-gradient(90deg, var(--color-teal), var(--color-orange));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}
#main-content:focus {
  outline: none;
}
.page-content {
  min-height: 60vh;
  padding: calc(var(--header-h) + 24px) 0 var(--space-xl);
}
@media (min-width: 1024px) {
  #main-content {
    padding-left: var(--header-w);
  }
  .page-content {
    padding: 48px 0 var(--space-xl);
  }
  .site-footer {
    padding-left: var(--header-w);
  }
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-scrolled {
  background: rgba(17, 34, 64, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(10, 25, 47, .18);
}
body.solid-header .site-header {
  background: var(--color-navy-light);
  box-shadow: 0 2px 10px rgba(10, 25, 47, .12);
}
body.solid-header .site-header.is-scrolled {
  background: var(--color-navy);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
}
.brand-mark {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-orange);
  color: var(--color-navy);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 900;
  clip-path: polygon(5px 0, 100% 0, calc(100% - 5px) 100%, 0 100%);
  flex-shrink: 0;
}
.brand-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .03em;
  white-space: nowrap;
}
.brand-footer {
  color: #fff;
}
.site-nav {
  display: flex;
  flex-direction: column;
}
.site-nav .nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.site-nav .nav-list a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, .72);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border-radius: 3px;
  transition: color .2s ease, background-color .2s ease;
}
.site-nav .nav-list a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-teal);
  opacity: .35;
  flex-shrink: 0;
  transition: opacity .2s ease, background-color .2s ease;
}
.site-nav .nav-list a::after {
  content: "";
  position: absolute;
  left: 42px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--color-teal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}
.site-nav .nav-list a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .06);
}
.site-nav .nav-list a:hover::before {
  opacity: 1;
}
.site-nav .nav-list a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.site-nav .nav-list a[aria-current="page"] {
  color: var(--color-orange);
  background: rgba(255, 107, 0, .12);
  font-weight: 700;
}
.site-nav .nav-list a[aria-current="page"]::before {
  background: var(--color-orange);
  opacity: 1;
  box-shadow: 0 0 8px rgba(255, 107, 0, .6);
}
.site-nav .nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}
.version-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 24px;
  padding: 3px;
  gap: 2px;
  background: rgba(255, 255, 255, .05);
  width: fit-content;
}
.version-btn {
  appearance: none;
  background: transparent;
  border: 0;
  color: rgba(255, 255, 255, .7);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 18px;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease;
}
.version-btn.is-active {
  background: var(--color-orange);
  color: #fff;
  box-shadow: 0 2px 8px rgba(255, 107, 0, .3);
}
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 10px;
}
.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(4) {
  transform: translateY(-7px) rotate(-45deg);
}
@media (min-width: 1024px) {
  .site-header {
    width: var(--header-w);
    height: 100vh;
    top: 0;
    left: 0;
    align-items: stretch;
    flex-direction: column;
    background: rgba(10, 25, 47, .86);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid rgba(100, 255, 218, .08);
    box-shadow: 8px 0 40px rgba(10, 25, 47, .12);
  }
  .site-header.is-scrolled {
    background: var(--color-navy);
    box-shadow: 4px 0 24px rgba(10, 25, 47, .3);
  }
  body.solid-header .site-header {
    background: var(--color-navy);
  }
  body.solid-header .site-header.is-scrolled {
    background: var(--color-navy);
  }
  .header-inner {
    flex: 1;
    flex-direction: column;
    align-items: stretch;
    max-width: none;
    padding: 32px 24px;
    gap: 40px;
  }
  .site-nav {
    flex: 1;
    background: transparent;
    padding: 0;
    position: static;
    transform: none;
    visibility: visible;
    overflow: visible;
  }
  .site-nav .version-switch {
    margin-top: auto;
  }
  .nav-toggle {
    display: none;
  }
  .site-nav .nav-list a {
    font-size: 15px;
    padding: 10px 12px;
  }
}
@media (max-width: 1023.98px) {
  body {
    padding-bottom: var(--tabbar-h);
  }
  body.nav-open {
    overflow: hidden;
  }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: var(--tabbar-h);
    left: 0;
    z-index: 99;
    background: var(--color-navy);
    padding: 32px 24px;
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .28s ease, visibility .28s ease;
  }
  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }
  .site-nav .nav-list {
    gap: 2px;
  }
  .site-nav .nav-list a {
    font-size: 20px;
    font-weight: 700;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    border-radius: 0;
  }
  .site-nav .nav-list a::after {
    left: 52px;
  }
  .site-nav .version-switch {
    margin-top: 24px;
  }
  .tab-bar {
    display: flex;
  }
}
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--tabbar-h);
  background: var(--color-navy-light);
  border-top: 1px solid rgba(100, 255, 218, .12);
  display: none;
  align-items: stretch;
  z-index: 95;
}
.tab-bar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  text-decoration: none;
  color: rgba(255, 255, 255, .55);
  font-size: 11px;
  line-height: 1;
  min-width: 0;
  transition: color .2s ease, background-color .2s ease;
}
.tab-bar a:hover {
  color: #fff;
}
.tab-bar a[aria-current="page"] {
  color: var(--color-orange);
}
.tab-icon {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-teal);
}
.tab-bar a[aria-current="page"] .tab-icon {
  color: var(--color-orange);
}
.tab-label {
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}
.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, .78);
  margin-top: 80px;
  position: relative;
}
.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-orange-soft), var(--color-teal));
}
.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 56px clamp(16px, 4vw, 40px);
  max-width: var(--container);
  margin-inline: auto;
}
@media (min-width: 720px) {
  .footer-main {
    grid-template-columns: 1.5fr 1fr;
  }
}
@media (min-width: 1100px) {
  .footer-main {
    grid-template-columns: 1.6fr 1fr 1.2fr;
  }
}
.footer-col {
  min-width: 0;
}
.footer-brand-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.footer-tagline {
  font-size: 18px;
  font-weight: 700;
  color: rgba(255, 255, 255, .9);
  margin: 0;
}
.footer-trust {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .6);
  max-width: 420px;
  margin: 0;
}
.footer-links-col,
.footer-contact-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-heading {
  font-size: 14px;
  font-weight: 800;
  color: rgba(255, 255, 255, .95);
  margin: 0 0 16px;
  letter-spacing: .08em;
}
.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 14px;
}
.footer-list a {
  color: rgba(255, 255, 255, .68);
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-list a:hover {
  color: var(--color-orange);
  padding-left: 4px;
}
.footer-contact-list {
  color: rgba(255, 255, 255, .65);
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
}
@media (max-width: 720px) {
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}
.copyright {
  margin: 0;
}
.icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--color-orange);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
  transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
}
.btn:hover {
  transform: translateY(-2px);
  background: #FF8C33;
  box-shadow: 0 6px 20px rgba(255, 107, 0, .25);
}
.btn:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  border: 2px solid currentColor;
  color: var(--color-orange);
}
.btn-outline:hover {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: #fff;
}
.btn-light {
  background: var(--color-white);
  color: var(--color-navy);
}
.btn-light:hover {
  background: #F0F4F8;
}
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}
.btn-slant {
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  border-radius: 0;
}
.breadcrumb {
  font-size: 13px;
  color: var(--color-muted);
  padding: 24px 0;
}
.breadcrumb ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb a {
  color: var(--color-navy);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--color-orange);
  text-decoration: underline;
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-muted);
}
.breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}
.grid {
  display: grid;
  gap: var(--space-md);
}
.grid-2 {
  grid-template-columns: 1fr;
}
.grid-3 {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
.grid-asym {
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .grid-asym {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
  }
}
.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  border-left: 3px solid var(--color-orange);
}
.card-dark {
  background: var(--color-navy-light);
  color: rgba(255, 255, 255, .85);
  border-left: 0;
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 97% 100%, 0 100%);
  padding: var(--space-lg);
}
.card-light {
  background: var(--color-bg-blue);
  padding: var(--space-lg);
  border-radius: var(--radius);
}
.card-hoverable {
  transition: transform .2s ease, box-shadow .2s ease;
}
.card-hoverable:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(10, 25, 47, .12);
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--color-orange);
  text-transform: uppercase;
}
.section-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--color-orange);
  flex-shrink: 0;
}
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(255, 107, 0, .12);
  border: 1px solid rgba(255, 107, 0, .28);
  color: var(--color-orange);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}
.tag-light {
  background: rgba(100, 255, 218, .1);
  border-color: rgba(100, 255, 218, .3);
  color: var(--color-teal);
}
.data-number {
  font-family: var(--font-mono);
  font-size: 2em;
  font-weight: 700;
  line-height: 1;
  color: var(--color-orange);
  letter-spacing: -.02em;
}
.img-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-blue);
  overflow: hidden;
  min-height: 180px;
}
.img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-container::after {
  content: attr(data-label);
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: rgba(10, 25, 47, .7);
  color: var(--color-teal);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  border-radius: 2px;
}
.img-container-dark {
  background: linear-gradient(135deg, var(--color-navy), var(--color-navy-light) 60%, var(--color-orange));
}
.img-container-slant {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 36px) 100%, 0 100%);
  border-radius: 0;
}
.slant {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 100%, 16px 100%);
}
.slant-left {
  clip-path: polygon(16px 0, 100% 0, 100% 100%, 0 100%);
}
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .45s ease, transform .45s ease;
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.hero-title {
  font-size: clamp(42px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--color-navy);
  margin-bottom: .4em;
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-soft);
  max-width: 640px;
}
.hero-data {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-orange);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .site-nav,
  .nav-toggle .toggle-bar {
    transition: none !important;
  }
}